Effects of pH on Georeaction and Elongation of Maize Root Segments

Abstract
The pH effect was analysed in relation to the georeaction and the elongation of apical maize root segments. Two kinds of citrate‐disodium phosphate buffers were used for pretreatment and application on the fresh cut section of the segments. Both reactions to gravity and to growth seem to be more affected by the buffer components than by the proton concentration. Such results were confirmed by the comparison of several buffers.